Riveting-machine.



HARTLEY J. CHAPLIN, 0F SEATTLE, WASHINGTEN, ASSIGNOR 0F ONE-HALF TO FREDC.

FURTH, OF SEATTLE, UTASHINGTON.

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Specification 01 Letters l atent.

Patented June 22, 1915.

Application filed November 18, 1913. Serial No. 801,591.

To all whom it may concern Be it known that I, MANLEY a citizen of theUnited States, residing at Seattle, in the county of King and State ofWashington, have invented certain new and useful Improvements inRiveting-Machines, of which the following is a specification.

This invention relates to riveting machines; and its object is theperfecting of machines of this class where rapidity and facility ofoperation are essential conditions in the economical riveting ofstructural work on an extensive scale.

The invention is illustrated in the accom panying drawings, whereinFigure 1 is a longitudinal vertical section of a machine embodying thepresent invention. Fig. 2 is a side elevation of the same. Fig. 3 is atransverse vertical section of Figs. 1 and 2. Fig. 4 is a plan view ofthe adjustable stop for regulating the lengths into which the bar-stockis to be cut.

Referring to the drawings, 5 indicates the frame or casing for aportable riveting machine and, as lllustrated, is provided with JCHAPLIN,

a swivel eye-bolt 6 whereby the machine is supported.

The casing is formed with forwardly'protruding jaws 7'and 8 which aredisposed in spaced relations to afford a gap therebe-' tween. Said jawsare bored to accommodate axially alined upper and lower tubular bushings9 and 10 for the dies 11 and 12 which are provided with recesses 11 and12 on the opposing ends. The die 11 extends for a distance above the topof the associated bushing 9 and has its upper end screwthreaded toreceive a nut 13. A spring 14 is interposed between said nut and thebushing 9 andtends to push the latter downwardly with Irespect to thedie 11.

15 represents a' lever fulcrumed to a pin 46 rigidly secured to thecasing and having one of its arms, 15, extending through a slot 10provided in bushing 10 into a slot '12 provided in the die 12. The depthof the die-slot is greater than that of the lever-arm 15 and-is disposedrelatively to such arm so that the latter will have a certain amount ofupward movement before engaging against the top 12 of the die to elevatethe same.

16 is a lever fulcrumed to a pin 17 and has one arm 16 extending througha slot 9 o bushing 9 into a slot 11 of die 11.

The slot 11 is of substantially the same depth as that of the portion ofthe lever-arm connecting the housing to the screw for verticalmovements.

22. is a crank-handle secured to the upper end of the screw for rotatingthe same, and

'22 is a finger provided on the handle for designating the circularmovement of the screw with reference to the index marks 23 provided onthe casing.

The levers 15 and 16 are operated through themedium of toggle links 24from the plston-rod 25 of a, suitable motor or power cylinder 26 whichis actuated by a fluid, such as steam or compressed air. The cylinder 26is rigidly 'connected to or formed integral with the machine casing 5.

27 represents the handle forbperating a three-way valve for admittingthe power agent to either end of the cylinder, as required. a

Included in the invention are devices for heating a bar of iron or steeland cutting the same into predetermined lengths for rivets;

. to which end I secure to, and at one side of the casing, as by bracket28, (Fig. 3) a furnace comprising a shell 29 which is lined withfire-brick 30, or an equivalent. Aperthe furnace from a gas oroil-burner.

As illustrated, the burner nozzle 33 is confrom the furnace.

nected by an oil supply pipe 34 with an oil reservoir 35 and also with asteam or compressed air supply-pipe 36 whereby the oil is jetted intothe furnace in the well-known manner. The pipe 36, moreover, has abranch 36 extending into the reservoir to furnish suflicient pressuretherein to feed the oil to said nozzle. By adjusting valves 34 and 36 onthe respective pipes, the proper proportions of steam and oil may beregulated to produce the requisite heat within the furnace.

37 represent a pair of shear members for cutting the bar as it isprogressively pushed Said shear members are operated from a powercylinder 38 through the medium'of a lever 39 and toggle links 40. Saidshear members are positioned intermediate the furnace and a gage deviceconsisting of a polygonal plate 41 which is rotatably mounted upon a pin42 secured to the machine casing. The axis of the plates rotation isarranged with respect to the plate edges so that the latter, when turnedtoward'the shears, will be at selected distances from the shears as,say, one, two, three, etc. inches for the respective edges a, b, 0, etc.

43 represents spaced holes provided in the plate 41 for a spring-pressedlatch 44 which is employed in securing the plate in set position.

The operation of the invention is as follows: A bar 32 is inserted inthe furnace and subjected to the heat produced from the furnace untilthe bar is at a suitable temperature. The bar is shoved to protrude theend thereof beyond the furnace and against the previously adjustedgage-plate 41. The shears are then actuated through the agency of thepower cylinder 38 and the mechanical connections 39 and 40 with theshear members 37, to cut off a piece of the bar whichfalls into areceptacle or pan 45 provided therefor. The operator then inserts suchpiece of the bar into the holes for the rivet provided in the work W,Figs. 1 and 2, when such holes are in alinement with each other and withthe axis of the die 12. Under such conditions, the work-is .juxtaposedwith the lower bushing 10 and the bar-piece R will be supported in therecess 12 of the die. The operator then manipulates the handle 27 so asto admit the power medium at the rear end of cylinder 26 resulting inthepiston-rod being urged forwardly to force the knuckle of the toggleelements 24 forwardly, which actuates the levers 15 and 16 to cause thedies 11 and 12 and the associated bushings 9 and 10 to approach eachother.

More particularly, the die'll and bushing 9 are primarily moveddownwardly until the bushing is brought against, the work,

whereupon the work is clamped between the upper and lower bushings.

.The levers 15 and 16 continuing their travel then move the dies toengage the ends of the piece R, to head the same at both ends. Thespring 14 yields to the independent nio ement of the die 11 and also toa relative small upward movement of the bushin 0 as the riveting of thepiece R upon the work is being finished. When completed, the handle 27is operated to effeet the opeliiing of the dies for the removal of thewor The invention is of simple and strong construction and it is thoughtthat it will prove to be of extreme usefulness in many operations abouta shop or at the place of erection of bridges or other structures.

Having described my invention, what I claim, is I 1. In a machine of theclass described, in combination, a machine frame, levers pivoted in saidframe, toggle links each pivoted at one end to one of said levers and atits other end to the piston rod of a power cylinder, a pair of diesoperated by said levers, and bushings therefor mounted for independentreciprocatory movements "in the frame, whereby the work is first clampedbetween the bushings, and the dies are subsequently influenced to effectthe heading of 3.- In a machine of the class described, in

combination, a machine frame, a pair of axially alined bushings mountedin said frame for endwise movements, dies having recessed ends mountedin the respective bushings, a pair' of levers pivoted in said frameintermediate their ends, toggle links respectively pivoted at one end tosaid levers and at their other ends to'the piston rod of a powercylinder, slots in said dies, and bushings for the reception of the freeends of said levers whereby said dies and bushings are given an endwisemotion to first clamp the work between the bushings and to subsequentlyactuate. the dies vto produce heads on both ends of a bolt which isinserted within a hole provided in the Work.

4. In a machine of the class described, a pair of axially alinedriveting dies having recesses in the opposing ends thereof, a. bushingfor each die, a spring connection between one of said dies and theassociated bushing, and power-actuated means adapted to actuate saidbushings to'clamp the Work in each of said bushings, levers for suc- 10cessively actuating said bushings and dies,

an adjustable fulcrum support for one of 'said levers, apower cylinder,and operative connections including a pair of toggle elements foractuating said levers.

Signed at Seattle, Wash, this 6th day of 15 Nov., 1913.

MANLEY J. CHAPLIN. Witnesses: E. PETERSON,

Henson BARNES.

